That's how i got sold on it too. My CSS skills aren't great, tailwind made it just slightly harder to deal with CSS i feel. Seems healthier to learn actual CSS instead of abstracting it away if the benefit is that low in the best of cases. Sure, large projects are a thing, but nobody puts a whole project in 1 css file anymore anyway, so what does it matter at that point.

I've seen people advocate for Tailwind because "CSS is too hard, I don't want to think about selectors".

Yep, those people are wrong :)

(I mean sure, you can sort-of mostly skip selectors if you use Tailwind, but selectors are about the easiest part of CSS. I've never heard of someone struggling specifically with those but not with e.g. layouts, stacking context, relative font sizes, etc.)